Internal-combustion engine.



C. A. JUENGSY.

lNTERNAL COMBUSHON ENGLNL APPLICAYION FiLED MAR. I3, i9l5.

Putcntcd Oct. 30, ISN?.

MAM 111.15??

CHARLES A. JUENGST, 0F ACROTON FALLS, NEW YORK.

INTERAL-COMBUSTION ENG-INE.

Specification of Letters Patent.

Patented @en 31d, gll.

Appn'canon ined March 13, 1915. sel-m1 No. 14,063.

To all fui/wmy may concern.'

and claimed e two-cycle engi 4e in which there is provided ineens 'for introdneingluel Sulletentially nt the end of the power stroke of thepiston into oneA end of the cornlnistion cheminer :at n point ncent to the' ignition ineens Under snilicient compression end in :t constently widening strewn from its point of ndniission, which streinn by ,its expansion displecos the products ol' coinlnlstion en mosse-:1nd insures its own localization ndjncent to the ignition ineens on the co1npression stroke ol the piston.

The present invention is an improvement on; the invention disclosed in said cornpnnioi'i application :rnd has for its innin object the revention of the mingling of the oil splash with the incoming fuel.

Other objects oi the invention w les the Specilicntion proceeds.

ln nccordancc with the above the invention compris as n. two-cycle engine consisting of cylinder provided 'with .1 ernnl case und n hollow piston, seid elements ilorining n comlonntion chamber :rnd e crank onse conipression chamber, seid hollow piston cornmnnienting at :lll tin'ies with the crunk c: und et suitable intervals with the eornhns tion chamber, together with ineens for feed ing fuel directly into seid piston but in such o. wey that the incoming fuel is shielded from the oil splash in the crank cese.

@ther ieetnree of constrnctiom combinetion of and arrangement of elements will :is the specification proceeds.

ecolnpanyiing dre ngs the inven in is .iiscloecil in :i concrete :md prelf'crred .erm lint elizrnge:` oit conetrination nifty he fonde without departing from c le l ended scope oil 1ei1w .ntim, seed in ine appone e, n 'tl le drewir g ill. appear eylin d er.

two-cycle engine embodying the invention, with the piston shown :it the end of the compression stroke.

Fig. i? is :L view similar to Fig. l, with the piston shown :Lt the end of' the power stroke.

Fig. 3 :i horizontal sectional view on the line of Fig. l.

Fig. 4 is n .horizontal sectional View on the line 4-4 of Fig. l.

Similar characters of reference indicate corresponding parts in -the different views.

l indicates the cylinder of the engine provided with n mein portion 2 and e. supplenientel hollow extension 3, ther being it tapered portion t which connects the innin portion oit the cylinder :ind the supplemental hollow extension. At thc lower end of the ninin portion 2 ol' the cylinder is the crank cese 5 which is nir tight end which contains n body of oil, not chown, in the nsnnl ninnner. (l indicaties n hollow piston consisting of the vmain portionv 7. :i hollow plunger S nud :t sniinhle connecting portion il, in the present instance oi" tapered ormntir'in, hetween the portions 7 und 8. The piston G is connected to the crank shziit l() by ineens of the crank l1 und connecting rod l2 in the usual ninnner. 18 ie the l'nel inlet which e tends through the cylinder to the piston and which is normally cut oil by the letter. 1% is the exhaust port len ding from the lannular chamber 15 vwhich connnnnicntes with the .moin portion of the cylinder ley ineens of theports 1G nt the proper peint in the cycle of the machine. il? imflicute ports in the hollow plunger eetnlilishing coinnninicntion between the sind hollow plunger and the Adjacent to the ports 17 is the conical-'simpel liresoreen 1S which l'nevents explosion within the piston. lll is the ignition menne shown here :is :t sparlplug of conventional type.

lt will he noted that the cylinder and the pieton togo her form :i coinonetion channher hnving n end portion of relatively smell capacity which gradually widens in one direellen7 and theY t the hollow piston., the cylinder und vho @rank er, a torni n ernnlf cesse compression che roher.

llithin the hollow piston there n lonni- Y ternlinff 't 20 which coni: .i the hollow pieton ond whi'ih han nn ir fi opening trans .f'creely i1 .o the 'tnel niet l en the coinpreseion stroli'e oli the piston. 'it will fin'- vte ther be noted that the walls of the said conduit shields the incoming fuel from-the splash in the crank case.

At the end of the compression stroke the ports occupy the position shown in Fig. 1 and fuel will now flow through the inlet 13 into the conduit QOand thence into the interior of the piston and the compression chamber formed by it and the other elements of the machine. 1

Substantially at the completion. of the power stroke, as shown in Fig. 2, the ports l@ open up communication between the cylinder and the chamber 15, and the ports 17 permit 'the fuel to flow from the hollow piston into the narrowest point of the end portion of the combustion chamber.

What is claimed, is:

l. A. two-cycle engine comprising: a cylinder, having a crank case, and a hollow piston, said elements forming a combustion chamber and a crank case compression chamber, said hollow piston communicating at all times with the crank case and having ports at the upper end which at suitable intcrvals communicate directly with the combustion chamber and a conduit extending longitudinally of said piston and arranged to deliver fuel into the upper end of said pistonat other intervals.

2. A two-cycle engine comprising: a cylinder having a crank case and a hollow .piston, said elements forming a combustion chamber having an exhaust port at one end and a crank case compression chamber, said hollow piston communicating at all times with the crank case and having portsv which open directly into said combustion chamber at the end remote from the exhaust port at the end of the power stroke, a fuel inlet through the cylinder to the piston normally cut off by the latter, and a conduit within said hollow piston normally open to the upper end of the piston adjacent said ports and adapted to communicate with the inlet' on the compression stroke of the piston.

3. in internal combustion engine vcomprising: a cylinder forming at one end a crank-case compression chamber'and at the other end acombnstion chamber having an.

dayof March A. D. 1915.

operable in said cylinder extension, said Y piston extension being provided with ports which open directly into the combustion chamber at the end of the power stroke, a fuel inlet in the cylinder, and a conduitin said piston adapted to convey fuel from said inlet into said piston extension at the end of the compression stroke.

5. An internal combustion engine comprising: a cylinder forming at 'one end a crank-case compression chamber and at the other end a combustion chamber having an extension, a hollow piston open to said compression chamber and having an extehsion operable in said cylinder extension, said piston extension'being provided with ports which open directly into the'combustion chamber, and a conduit in said .piston extending substantially the full length thereof and adapted to convey fuel into the piston extension, said fuel passing from the lpoint of delivery in said piston extension through said hollow piston to said combustion chamber, and said hollow piston serving to directly convey fuel from said compression chamber throughesaid ports into said combustion chamber.

Signed at New York'in the county of New York and State of New York CHARLES A. JUENGST. Witnesses: f

AXEL V. BEEKEN, TERESA V. LYNCH.

this 11th 

